| Abbreviation | Definition |
|---|---|
| NREPD | National Regulation for Electric Power Deistribution |
| NREPG | Ntional Regulaion for Electric Power Generation |
| NRFND | Not Recommended For New Design |
| NRI | Nanoelectronics Research Initiative |
| NRM | Non-Replacement Model |
| NRND | Not Recommended for New Design |
| NRS | No-Resonance System |
| NRSE | Non-Referenced Single Ended |
| NRT | Non-Resonant Term |
| NRZ | Non Return to Zero |
| NS | Network Series |
| NS | Neue Serie |
| NS | No Shunt |
| NSA | National Security Agency |
| NSAPI | Netscape Server Api |
| NSE | Neutral Stream Etch |
| NSE | North Sea Electronics |
| NSEB | Nebraska State Electrical Board |
| NSEC | Nanoscale Science and Engineering Center |
| NSED | Nebraska State Electrical Division |